An Empirical Na-K-Ca Geothermometer For Natural Waters

An Empirical Method Of Estimating The Last Temperature Of Water-Rock Interaction Has Been Devised. It Is Based Upon Molar No., K, And Cl), Concentrations In Natural Waters From Temperature Environments Ranging From 4 To 340 Degrees C. The Data For Most Geothermal Waters Cluster Near A Straight Line When Plotted As The Function Log (Xa/K) +.B Log [V(Ca)/Na] Vs Reciprocal Of Absolute Temperature, Where B Is Either) Or F Depending Upon Whether The Water Equilibrated Above Or Below 100 Degrees C. For Most Waters Tested, The Method Gives Better Results Than The Na/K Methods Suggested By Other Workers. The Ratio Na/K Should Not Be Used To Estimate Temperature If V(1L1Ca)/Lifna Is Greater Than 1. The Na/K Values Of Such Waters Generally Yield Calculated Temperatures Much Higher Than The Actual Temperature At Which Water Interacted With The Rock. Egi Reference Number Gl03472

Data and Resources

Metadata Source

Additional Info

Field Value
Citation Date 1972-01-01T00:00:00

Harvest Information

Original ID 0BE2D5C0334B45308E1EB3BA91030CB1
Index Date 2014-06-17T11:57:02
Original Format ISO-USGIN
Original Version 1.2


Organization R. O. Fournier And A. H. Truesdell